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In the present work, titanium carbide-titanium boride coatings are prepared on Ti6Al4V by powder immersion reaction assisted coating (PIRAC). Microstructure and phase composition of the gained surface layers are characterised by X-ray diffraction and scanning electron microscopy equipped with energy dispersive spectrometer. Results show that homogeneous titanium carbide-titanium boride coatings can be formed on the substrate. Phases of the prepared coatings are co-existed TiC, TiB and TiB 2 and their content varies with PIRAC treatments. Hardness of the titanium carbide-titanium borides coating prepared at 900uC is about 24?5 GPa, while that of prepared at 1000uC is about 22?5 GPa and shows a larger scatter.

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